Evolution of crystallographic orientation and microstructure in the triangular adapter of grain continuator of a 3rd-generation single crystal superalloy casting during directional solidification

doi:10.1016/j.jallcom.2021.162782

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	Evolution of crystallographic orientation and microstructure in the triangular adapter of grain continuator of a 3rd-generation single crystal superalloy casting during directional solidification
	Xiao, Jiuhan 2,3; Jiang, Weiguo 1,2; Han, Dongyu 2,3; Li, Kaiwen 2; Lu, Yuzhang 2; Lou, Langhong 2
刊名	JOURNAL OF ALLOYS AND COMPOUNDS
	2022-03-25
卷号	898 页码:12
关键词	Single-crystal superalloy Dendrite growth Crystallographic orientation Freckle formation Flare angle Withdrawal rate
ISSN号	0925-8388
DOI	10.1016/j.jallcom.2021.162782
通讯作者	Jiang, Weiguo(jwg@wfust.edu.cn)
英文摘要	The evolution of the crystallographic orientation and the microstructures in triangular adapters of grain continuators (GCs) with different flare angles and thicknesses prepared by a 3rd-generation single crystal (SX) superalloy were investigated under different withdrawal rates. The microstructures were observed by an optical microscope and the crystallographic orientation of the GCs was measured by electron backscatter diffraction (EBSD). The directional solidification process was simulated by a commercial simulation software ProCAST. The experimental results showed that the [001] misorientation between both sides of the GCs at top cross section increased with the increasing of the flare angle, the thickness of specimens, and the withdrawal rate. These phenomena were attributed to the changing of the isotherm morphology in the mushy zones and the velocity of the solidification front. As for a low flare angle, the freckle defect formed at one side of specimens under the withdrawal rate of 1 mm/min. With the increasing of flare angle, the freckle defect cannot be found at the same position of the specimens. The formation mechanisms of freckle defect in the triangular adapters of GCs were further discussed. (c) 2021 Elsevier B.V. All rights reserved.
资助项目	National Natural Science Foundation of China[51674235] ; National Science and Technology Major Project of China[2017-VI-0001-0070] ; National Science and Technology Major Project of China[2017-VI-0019-0091]
WOS研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000749539800003
资助机构	National Natural Science Foundation of China ; National Science and Technology Major Project of China
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/173573]
专题	金属研究所_中国科学院金属研究所
通讯作者	Jiang, Weiguo
作者单位	1.Weifang Univ Sci & Technol, Shouguang 262700, Peoples R China 2.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, Shenyang 110016, Peoples R China 3.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Xiao, Jiuhan,Jiang, Weiguo,Han, Dongyu,et al. Evolution of crystallographic orientation and microstructure in the triangular adapter of grain continuator of a 3rd-generation single crystal superalloy casting during directional solidification[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2022,898:12.
APA	Xiao, Jiuhan,Jiang, Weiguo,Han, Dongyu,Li, Kaiwen,Lu, Yuzhang,&Lou, Langhong.(2022).Evolution of crystallographic orientation and microstructure in the triangular adapter of grain continuator of a 3rd-generation single crystal superalloy casting during directional solidification.JOURNAL OF ALLOYS AND COMPOUNDS,898,12.
MLA	Xiao, Jiuhan,et al."Evolution of crystallographic orientation and microstructure in the triangular adapter of grain continuator of a 3rd-generation single crystal superalloy casting during directional solidification".JOURNAL OF ALLOYS AND COMPOUNDS 898(2022):12.